Um, why don't you (expand) it yourself
At some point it was decided that all cards receive a rarity designation with the exception of basic energy cards
(Thankfully you can check how many you currently have by checking in your card collection.) Here's the card you'll need to collect 100 times for 'A Sweet Party of Epic Proportions': x100 Milcery #36 (One Diamond) Reward: Alcremie Emblem Extradimensional Crisis Museum 1 'Extradimensional Crisis Museum 1' tasks you with collecting six specific Full Art cards, including Celesteela and Alolan Meowth (a rather sassy-looking version of Meowth too)
Opponents of this card are usually concerned about new, powerful designs homogenizing the Commander format, and Archaeomancers Map is definitely an efficient enough card to be a talking point in that conversation
Pendulum Monster A Pendulum Monster (Japanese: Pendyuramu Monsut , abbreviated Pendulum Card in the early episodes of the Yu-Gi-Oh
Chain (A-1) is activated in response to Chain (A-2), with a Spell Speed less than or equal to X